Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Greg S Olsen, D.C.
Chiropractor in Lake Forest, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750300570
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Registry record
Entity type Individual (Type 1)
Name Dr. Greg S Olsen
Credential D.C.
Sex Male
Practice address 22672 Lambert St, Suite 620, Lake Forest, CA, 92630
Phone (949) 859-5192
Enumeration date Jul 19, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Greg Olsen?
The National Provider Identifier (NPI) for Greg Olsen is 1750300570, a Type 1 (individual) record in the CMS NPPES registry.
Where does Greg Olsen practice?
The practice location on file with NPPES is in Lake Forest, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Scott E. West DDS, Inc. Dental Clinic/Center · Lake Forest, CA NPI 1538242912 Olsen Chiropractic, A Professional Corporation Chiropractor · Lake Forest, CA NPI 1134292311 Lisa Rae Speech-Language Pathologist · Lake Forest, CA NPI 1205966397 Scott West General Practice Dentistry · Lake Forest, CA NPI 1598966004 Megan Welch Occupational Therapy Assistant · Lake Forest, CA NPI 1629831524 Jenifer Davies Occupational Therapy Assistant · Lake Forest, CA NPI 1538923289 Jessica Arellano Occupational Therapy Assistant · Lake Forest, CA NPI 1487487153
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.